●The VCA610 is a wideband, continuously variable, voltage-controlled gain amplifier. It provides linear-dB gain control with high impedance inputs. It is designed to be used as a flexible gain-control element in a variety of electronic systems.
●The VCA610 has a gain-control range of 77dB (\x9638.5dB to +38.5dB) providing both gain and attenuation for maximum flexibility in a small SO-8. The broad attenuation range can be used for gradual or controlled channel turn-on and turn-off for applications in which abrupt gain changes can create artifacts or other errors. In addition, the output can be disabled to provide \x9677dB of attenuation. Group delay variation with gain is typically less than ±2ns across a bandwidth of 1MHz to 15MHz.
●The VCA610 has a noise figure of 3.5dB (with an RS of 200) including the effects of both current and voltage noise. Instantaneous output dynamic range is 70dB for gains of 0dB to +38.5dB with 1MHz noise bandwidth. The output is capable of driving 100. The high-speed, 300dB/\xB5s, gain-control signal is a unipolar (0V to \x962V) voltage that varies the gain linearly in dB/V over a \x9638.5dB to +38.5dB range.
●The VCA610 is designed with a very fast overload recovery time of only 200ns. This allows a large signal transient to overload the output at high gain, without obscuring low-level signals following closely behind. The excellent overload recovery time and distortion specifications optimize this device for low-level doppler measurements.
● WIDE GAIN CONTROL RANGE: 77dB
● SMALL PACKAGE: SO-8
● WIDE SIGNAL BANDWIDTH: 30MHz
● LOW VOLTAGE NOISE: 2.2nV/Hz
● FAST GAIN SLEW RATE: 300dB/us
● APPLICATIONS
● OPTICAL DISTANCE MEASUREMENT
● AGC AMPLIFIERS
● ULTRASOUND
● SONAR
● ACTIVE FILTERS
● LOG AMPLIFIERS
● IF CIRCUITS
● CCD CAMERAS
